单选题：The investigators criticize the drug giants because the latt

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题目内容：
The investigators criticize the drug giants because the latter___________． A．do not let their opponents to resort to the court
B．take advantage of the patent cluster to protect their drugs
C．bribe each other SO as to maintain monopoly
D．are mean and unwilling to apply for drug patents
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分类：英语六级  题型：单选题
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